20.500.12556/DiRROS-24398 Study of the neutron radiation hardness of MAPD-3NK2 silicon photomultipliers The radiation hardness of MAPD-3NK2 photodiodes with deep-buried pixel structures was evaluated under neutron irradiation at fluences ranging from 3.6 × 109to 3.6 × 1012neq/cm². Irradiation induced dark current increase of up to 2060 times, a breakdown voltage shift of (0.37 ± 0.08) V, a photo signal amplitude reduction of (90.1 ± 0.4) %, and a tenfold degradation in amplitude resolution. Partial recovery was observed after 40 days of room-temperature annealing, with dark current decreasing by 35%.Similar performance changes were observed in photodiodes with artificially elevated dark current, indicating that excess current is the primary driver of degradation. This current likely impedes photoelectron detection by occupying pixels or failing to fully quench the avalanche process, thereby reducing photocurrent. neutron irradiation radiation hardness silicon photomultipliers photodiodes dark current degradation nevtronsko obsevanje odpornost na sevanje silicijevi fotopomnoževalniki fotodiode poslabšanje zaradi temnega toka true false true Nature Publishing Group Združeno kraljestvo Angleški jezik Slovenski jezik © The Author(s) 2025 Neznano 2025-11-26 14:40:34 2025-11-26 14:40:34 2025-11-27 03:58:58 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Soavtorja iz Slovenije: A. Jazbec, K. Ambrožič; Opis vira z dne 25. 11. 2025; str. 1-12 article no. 40974 Vol. 15 Nov. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-05-21 2025-10-15 2025-11-20 53 2045-2322 10.1038/s41598-025-24759-1 258683651 https://www.nature.com/articles/s41598-025-24759-1 1 7ecb1d29-cacd-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=36319 RAZ_Ambrozic_Klemen_2025.pdf RAZ_Ambrozic_Klemen_2025.pdf 1 077A1C0852F3BCC5A8AEAE168B6B3DE8 262f686f1bbb74019199d60a3be2263ca2a593153669756e58792bda5b2ce610 014a3299-cace-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=36320 Institut Jožef Stefan 0 0 0